East Carbon City is a city in Carbon County, Utah, United States, that was incorporated on January 1, 2014 as East Carbon-Sunnyside, from the merger of the cities of East Carbon and Sunnyside.

East Carbon-Sunnyside was a temporary name, to be used until the city council could adopt a permanent name.

[2] As of January 1, 2016 the merged cities are officially known as East Carbon City, encompassing the subdivisions of Columbia, Dragerton and Sunnyside.

In 2018 East Carbon-Sunnyside had an estimated population of 1,475.

This article about a location in Utah is a stub.